I'm sorry. The session lifetime of our server is not 1440,24 minutes. It is 1440 seconds which is 24 minutes.

That is way too short for our surveys, but our host is not willing to increase the session lifetime. I got an e-mail from their supportservice and they told me to work with cookies to control the session lifetime. How do I do that???

-edit-

- the questions are not all on the same page. When a user clicks "next" does the session lifetime start counting again at zero?